Delayed can connection during multimaster startup

I have a system with a MD4-5 display and a MC43 controller in 1qanDesign 7.04. 

Between these two the master/diagnostics bus is connected via a wireless can repeater.

This works perfectly fine when the connection is established via the wireless repeaters. However when the modules statrtup together with the display, the display is started faster than the display, which causes no connection to the mc43 to be established even when the can connection is online.

If during startup the connection is online, but connection is lost and re-established, everything works fine.

I have already tried making the MC43 optional, but this didn't work.

There seems to be some check in the startup that causes this behaviour?

Is there any way to avoid this?